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Data processor and single-chip microcomputer with changing clock frequency and operating voltage

US 5,778,237 A · Assignee: Hitachi, Ltd. · Inventors: Yamamoto; Mitsuyoshi et al.

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32 drawing sheets

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed December 14, 1995. A US utility patent lasts 20 years from filing, so its term ended December 14, 2015.
  • Patents filed before May 29, 2000 can't get a term adjustment for USPTO delays, and any other extension is capped at five years, so it can't still be in force.
  • We haven't checked its US family, and a later related patent could still be in force. We check US rights only.
FiledDecember 14, 1995
GrantedJuly 7, 1998
Term endedDecember 14, 2015
Application number08/572677
Classification (CPC)G06F1/324 +2 more
Length53 pages

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